SLIP GRIPPING MECHANISM,申请号GB19870010461-传众专利搜索

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发明名称	SLIP GRIPPING MECHANISM
摘要
申请公布号	GB8710461(D0)	申请公布日期	1987.06.03
申请号	GB19870010461	申请日期	1987.05.01
申请人	HUGHES TOOL CO	发明人
分类号	E21B23/01;E21B23/04;F16D1/02;(IPC1-7):E21B23/00	主分类号	E21B23/01
代理机构		代理人
主权项
地址

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